Locking mechanism for cupboards.



P. W. HODGKINSON. LOCKING MEGHANISM FOR GUPBOARDS. APPLIUATION FILED MAR. 1, 1910.

976,261 Patented Nov. 22, 1910.

2 Simms-sum1.

WITNEssEs:

P. W. HODGKINSON.' lLOOKING MEGHAKNISM FOR GUPBOARDS.

APPLIoA'rIoN mun mm1, 1910.

976,261 4 Patented Nov. 22, 1910.

2 SHEETS-311mm.

' Wl'rNEsslv-:s:A

UNITED sTATEs PATENT oEEioE.

PERCY W. HODGKINSON, OF ROCHESTER, NEW YORK, ASSIGNOR TO CALDWELL MANU- FACTURING COMPANY, OF ROCHESTER7 NEW YORK, A CORPORATION 0F NEW YORK.

LOCKING MECHANISM FOR CUPBOARDS.

and State of New York, have invented certam new and useful Improvements 1n Locking-,Mechanisms for Cupboards, of which the fo lowing is a specication.

lVIy invention relates to locking mecha-- nis-m for cupboards or other receptacles.

adapted to receive milk bottles and other articles. In connection with such cupboards or receptacles it is common to provide locking mechanism by which an outer door, through which the milk bottles or other articles are inserted in the receptacle, may be so controlled that after having once been opened for the insertion of an article and closed again thereafter, the door cannot again be opened until the locking mechanism has been released by the owner of the receptacle. Mechanism ofA such construction is disclosed in my pending application filed November 10, 1910, Serial No. 527,348, and the present invention is an improvement 011 said mechanism. l

The object of the present invention is to produce a device of the kind referred to which shall be simple and inexpensive in construction and reliable in operation.

To the above end the inventionconsists in the locking mechanism hereinafter described, as the same is defined in the succeeding claims.

In the accompanying drawings, which illustrate, the preferred cmlmdin'ient-Ofjiny invention: Figure] is an elevation of the lockingr mechanism in locked positiomshow- 4ing the cupboard or receptacle in vertical section; `Fig. 2 is a horizontal section of the lockingr i'nechanisrn and receptacle on the line 'B --B in Fig. 1; .Figs and 4 are views similar to Fig. 1, showing the parts in different positions; Fig. 5 tive view of the keeper-actuating arm; and Fig. 6 is a detail perspective view of the latch. y

The illustrated embodiment of my invenT tion is shown as applied to a cupboard or receptacle formed in the outer wall of a building, and the drawings illustrate a side wall 1 the top 2, and thc bottom 3, of the receptacle. 4The receptacle is provided with an outwardly-opening door ft, through which access may be had .to the receptacle from y Specification of Letters Patent.

Application ,filed March 1, 1910.

is a detail perspec' Patented Nov. 22, 1910.

Serial No. 546,733.

without the building, and an inwardly-opening door 5, through which access may be had to the receptacle from within the building.

The outer door 4 is the one which it is necessary to lock, and for this urpose this door is provided with a latch in the form of an arm 6. This latch is fixed to avertical rod 7, which is free both to slide and to turn in two lugs 8y projecting from a plate on the inner surface of the door 4. A compression spring 9 coiled about the rod 7 and engaging a head 10 at the lower end of the rod, tends constantly to move the rod and the latch downwardly, and such movement is limited by a collar 11 on the rod 7 ,'arranged to engage the upper lug 8 when the rod and latch `are in their lowermost position.

A leaf spring 12 fixed to the upper end of the rod 7, and engaging the inner surface of the door 4, tends constantly to rotate the rod in a direction to swing the latch toward the wall 1 of the rece tacle, and this movement is limited by a s oulder 13 formed on the latch and arranged. to engage theinner surface of the bracket in which the rod-7 is mounted, as shown-in dotted lines, Fig. 2.

The latch G coperat'es with a latch-keeper 15 which is rotat-ively mounted upon a stud 16 projecting from a late 17 secured to the wall 1 of the receptac e. This keeper is provided wit-h a. succession of radial arms, each of which terminates in a llug 18. When the latch G is in its normal position a lug l14 on its extremity 'has a locking engagement with one ofthe lugs 18, as shown particularly in l? ig. 2, and under these conditions',` the outer door 4 is locked.

vided for imparting to the latter a step-byu step motion. These means comprise a lever 19 which is pivoted at one end upon the stud 1.6. The other end of the lever is connected, by a link20, with a sliding rod 21 mounted in lugs 22 projecting r plate 17. A compression spring 23 mounted upon the rod 21 tends constantly to' move the rod to the right, and thus, through the link 20, to swing the lever 1S) in the same direction. lVhen theinner dool 5 of the receptacle is closed, as shown in F ig. 1, the end of the rod 21 is engaged by the inner surfaceof this door, and the rod is moved to om the llt" and left-hand position, as shown in Figs. 1, 2 and 4. 4The door 5 is held closed by a latch v26 of any suitable form.` When the' door 5 is opened inwardly, however,as

indicated in brokenl lines in Fig. 2, thev 'spring 23 moves the slide rod 21 to the right, thereby swinging the lever to the right and into the position 'of Fig. 3,

The lever 19 is -rovided with an inwardly-extending o set lug 24. When the lever moves to the right, as above descrlbed,

' thelug 24 rides over the intervening arm of the keeper, owing to the beveled-inner surface of the lug, the necessary freedom 1n the lever being secured by means of asprm '27 which is coiled about the stud 16 and W ich holds the lever yield-in lyin engagement with theouter surface o the keeper.

vso

' ofthe described movement of the keeper has the further function of raising the latch into the latch near the lug 14. The lower sui- Withthe arts in the position of Fig. 3, if theinner g the cons uent movement of the slide rod 21 to the le t causes the lever 19 to swing` to the left, and the lug 24 on the lever is caused to engage and move one ofthe arms of the keeper, thereby vrotating the keeper, in a clockwise direction, throu h the angle between two of its arms. 'Ihe rst part fbf this movement causes the keeper to di nf gage the latch, so as to unlock the outer door 4, througlh theV vertical movement of the arm of t e keeper which at the time is in vengagement with the latch. The last'par't inoperative position. This is accomplished by the engagement of one of the lugs 1S with a' detent plate 25 fixed to the end of face of this detent plate is enga-ged by whlchever of the lugs 18 is risin into operative position, and, so lon as t 'e parts re main 1nthe'- position of. ig. 4, .the latch rests in elevated position upon such lug. With the (parts in the position of oor 4 is free to be opened foi` 4,. the outer the insertion of an' article into the receptacle. As-soon, however, as the 'door 4 is so opened,and the latch 6 is drawn out of- 5l5'14and 18 engage each other and the latch the rod 7, so that the lugs 14 and 18 vpass v ofthe door is completed, the sprin engagement with the lug 18, the spring 9 depresses the rod` 7 and the latch into their -or1ginal. positi on, as in Fig.- 1. Upon the succeedin closing movement ofthe outer door 4, t e beveled extremitiesof the lugs swings, `through its pivotal movement with each other, and when theclosing movement 12 swings the latch backinto locked position,

as inaFi 2.` The outer door cannot then be open Iagain untilthe step-by-step'mov'ement o1 f the keeper;hereinbeforev described has agam-beentaccomplished and c osing of the inner door y oor of the receptacle be. closedv by the opening,

My invention not limited to the embodi-v i maal ment he'r'einbefore described and illustrated in* the accompanying drawings, but may be embodied in vvarious other forms withinv the nature of the invention and scope of the following claims.

I claim 1. In combination with a rece tacle having an outer door and an inner dbor, means for locking the outer door com'rising two interengaging members rela-tive y movable in one directlon to Alock and relatively movable in another, direction transverse to therst mentioned directionto unlock, connections between one member and the outer door constructed and arrangedtoproduce said locking movement when said door is closed, and connections between the 'other member andthe innerdoor constructed andl arranged to produce said unlocking movement when the inner door is closed.

2. In combination with a rece tacle having an outer door and an innerl oor, means for locking the outer door comprising two interengaging members, one member being mounted within the receptacle and being movable in one direction to disengage and unlock from the other member, and the .other member being mounted on the outer door and being movable in another direction transverse to the first-mentioned direc-.95 tion to engage andinterlock with the first vmentioned member, and connections between the first mentioned member and the inner` door constructed and arranged to produce said unlocking movement in said member.

5'3. In combination with a receptaclehaving an outer and an'inner door, means for locking the outer door comprising-two interenga'ging members, one of said members being pivotally mounted inthe receptacle and the other member being pivotallr mounted on said-door and movable in a direction transverse to the direction of motion of the other member,:means connectedwith and actuated by the inner door for moving one 110. member about its pivot to'.- disengage and unlock the members, and means for moving the other/ member about its pivot to engage .andintelock the members.

l4. In combination-with a receptacle hav- -1. 15

ing a door,-means for .lockingthedoorcomprising a, latch mounted'on 'said -door-'and movable in two directions, a rotary keeper mounted in the 4receptacle and having a.'

4.series o f latch-enga `ng lugs, and means for jimpartmg a stepy-step rotation tothe keeper to cause each lug in successionrstto engage and move the latch, in one dire'cv tion, into inoperative osition, and, upon the nextactuation of t e keeper, todisen- .125 v vgage itself from locking engagement'w'ith the latch, the latch having normally a tendency .to move in both' of its directions of' .y movement into locking relation with -thekeeper. f' r and-Inova le in two directions at right ana tendency to move in both of its directions 15 5. In combination with a receptacle havl and, upon the next actuation of the keeper, ing two doors, means for locking one door I to dlsengage itself from locking engagement comprisin a latch mounted on said door with the latch, the latch/ having normally gles with each other, a rotary keeper mountof movement into locking engagement with ed'in the receptacle ang having a series of the keeper.

latch-enga ing lugs an means actuated by T the other oor for impart-ing a stepbystep PERCY W HODGKINSOM' rotation to the keeper to cause each ylug in lVlitnesses:

succession first to engage and move the latch, D. GURNEE,

in one direction1 1nto inoperative position, L. THON. 

